Nanotechnology Formulations and Modeling of Hydraulic Permeability Improvement for Nonwoven Geotextiles

First, the general concept of nanotechnology formulations used to manufacture geotextiles (GT) is introduced. Separation and filtration functions using geotextiles from nanoclay formulations are introduced as important concepts. Yellow clay was added as nanoparticles to make a polyester formulation in turn to make nonwoven geotextiles to improve the removal effects of toxic and organic components of leachate solutions. Engineering behavior was evaluated to confirm the effects of adding yellow clay. There is a possibility of nanocomposite formulations for geosynthetics in the future. Second, sustainable laminar geotextile composites with different fiber-packing densities were made, and the effects of laminar structures were examined on water permeability. To fabricate these materials, the fiber-packing densities of laminar geotextile composites were discriminated correspondingly. The experimental values of water permeability by permittivity test were smaller than those of the theoretical values due to the loss of hydraulic pressure at the interface between geotextiles. To interpret the water permeability behaviors, structural model of tubes with different fiber-packing densities was applied. Finally, the inlet forms – bell mouth and soft tube structures – of laminar geotextile composite pores were estimated from the loss rates of hydraulic pressure.